Performance of Cyclone Type Air-Cleaner as Applied to Internal Combustion Engine

概要

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The dust collection efficiency of a cyclone type air-cleaner as applied to a single-cylinder internal combustion engine and the effect of this air-cleaner on the volumetric efficiency of the engine were researched in a series of engine motoring tests. The test results were compared with those obtained in a series of tests by using a blower. The performances of a paper filter were also tested by the same methods. The following results were obtained : 1. The maximum values of dust collection efficiency of both air-cleaners were lower by a few percent under pulsating air flow (engine test) than under steady air flow (blower test). 2. The efficiencies of the cyclone type air-cleaner obtained in blower tests gave always lower values than those of the paper filter, in the normal range of suction air flow rate. While in the tests with engine, the cyclone gave rather higher values in high speed range. Consequently, the effect of the engine speed on the cyclone efficiency was less than on that of the paper filter. Above results were considered theoretically.
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